HELP!!!!!!!!! WILL MARK BRAINIEST


Read the following excerpt from Keats' "Ode to a Nightingale" and answer the question that follows.
"The murmurous haunt of flies on summer eves."

Which of the following devices is Keats using and how does it function in his poem?
A. He is using personification to describe the setting.
B. He is using a simile to support his main theme.
C. He is using alliteration to help establish a mood.
D. He is using onomatopoeia to create a multisensory image.